Male house cats may be black or yellow. Female house cats may be black, tortoise

Question

Male house cats may be black or yellow. Female house cats may be black, tortoise-shell, or yellow. The trait is X-linked. [ Females that inherit both a yellow and black genes are mottled yellow and black. The X from one parent (black) is expressed in some cells, and the X from the other parent (yellow) expressed in other cells. The inactive X each cell is found to be a chromosome attached to the plasma membrane and is called a Barr body.] Determine the kind of mating that produces females half of which are tortoise and half of which are black - half of the males are yellow and half black. Draw and label a diagram to explain this kind of result.

Explanation / Answer

B- Black

b- yellow

If genotype BB - Black

Bb- tortoise shell

bb- yellow

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